Permutation-padlock



' J! M. WALTER.

PERMUTATION PADLOCK.

APPLICATION FILED JUNE I, 1916.

1,337,674. Patented Apr. 20,1920.

v 5 a ATTORNEY UNITED STATES PATENT OFFICE.

JOHN M. WALTER, OF CALUMET, MICHIGAN.

PERMUTATION-PADLOCK.

Application filed June 1, 1916.

To all whom it may concern Be it known that 1, JOHN M. WALTER, a subjectof the Emperor of Germany, residing at Calumet, in the county ofHoughton and State of Michigan, have invented certain new and usefulImprovements in Permutation-Padlocks, of which the following is aspecification;

This invention relates to permutation padlocks.

The invention has more especial reference to an improved permutationpadlock, which comprises a casing having arranged therein, a pluralityof rotatable tumblers, which, when properly worked, will permit thewithdrawal of the shackle.

More particularly, the present invention has reference to the novelconstruction and arrangement of the various component elements of thedevice, and it is the primary object of the invention, to simplify andreduce the cost of manufacture of devices of this character, and providenovel details in the construction and arrangement of parts with a viewto higher efliciency generally.

Other improvements and novel details in the construction and arrangementof parts will be appreciated from the detail description below, which isto be read in connection with the accompanying drawing forming a parthereof and wherein I disclose the pre ferred. embodiment of theinvention for purposes of illustration.

In the drawing:-

Figure 1 is a side elevation of my improved padlock;

Fig. 2 is a similar view with the dial thereof, removed;

Fig. 3 is a transverse section through the padlock;

Fig. 4 is a section taken on the line 4% of Fig. 3; and

Fig. 5 is a detail perspective view showing the bifurcated arm andindicator hand assembled and connected together;

Fig. 6 is a top plan view of the tumbler plate, indicator hand,bifurcated arm which is adapted to actuate the tumbler plate and aportion of the supporting sleeve, the casin of the padlock being shownin section.

eferring now more particularly to the drawing wherein like referencecharacters designate like or corresponding parts throughout the severalviews thereof, 1 provide a casing or receptacle 1, whereby the variousparts of the lock may be housed.

Specification of Letters Patent.

Patented Apr. 20, 1920.

Serial No. 101,144.

A shackle 2 is passed through suitable openings in the marginal edge ofthe casing l and has one end thereof pivotally secured to the casingthrough the medium of ears 3, arranged interiorly of the casing, whilethe forward end thereof is beveled off as at A and engages with anabutment 5 carried upon the inner face of the side of the easing. A leafspring 6 is secured adjacent the lower extremity of the pivoted portionof the shackle 2 and has bearing upon a portion of the side of thecasing, thus, serving to normally force the free end of the shackleupwardly out of the casing 1. A sleeve 7 having a slot 8 is arrangedcentrally of the casing 1 and is secured thereto by means of a strip 9,afiixed to the bottom or rear wall of the casing 1. A push button 10 isslidably carried by the sleeve 7 and has arranged thereupon, at a pointadjacent its inner extremity, a pin 11 which travels in the slot 8 ofthe sleeve 7. Spacing elements 12 are secured to the strip 9 and serveas means whereby the circular plate 13 having a slot or opening 11arranged therein, may be held in spaced relation from the strip 9. Theplate 13 is anchored within the casing of the padlock by being rivetedor soldered to the spacing elements 12, these elements 12 being securedto the strip 9 which is soldered or otherwise anchored to the casing 1,as will be obvious by considering Fig. 3 of the drawing. A supportingpost 15 is carried by the inner face of the circular plate 13 andpivotally supports a circular yoke 16, which yoke is arranged about thesleeve 7 in such a manner as to be engaged by the pin 11 and has formedthereon, a laterally extending arm which carries, at a point adjacentits outer extremity, an angularly disposed pin 17, the purpose of whichshall be hereinafter described.

Referring now to the locking means whereby the shackle 2 will be held ina closed position, an arm 18 having its outer extremity offset, issecured to the pivoted end of the shackle 2 and extends forwardly intoengagement with a spring keeper 19, which keeper, comprises asubstantially arcuate spring having a portion thereof secured to theunder face of the strip 9 as at 20 and extends forwardly into proximitywith the circular yoke 16. A seat 21 is formed in the keeper 19 and isadapted to receive the outer end of the arm 18 therein. It will beapparent, that when the arm 18 is engaged withthe seat 21 of keeper arm19, the beveled portion at of the shackle will be in a position adjacentthe abutment 5 and due to the engagement of the arm 18 with the keeper19 will be prevented from moving outwardly, until properly released.

In order to provide means whereby the keeper 19 may be actuated torelease the arm 16, when it is so desired, I provide a plurality ofrotatable tumbler plates 22 and 23, these plates being supported uponthe sleeve 7 and having suitable openings or slots 1 1" formed thereinand adapted to be brought into registration with a similar slot Llformed in the circular plate 13. A suitable nut 24 1S threaded upon thesleeve 7 and is adapted to hold the plates 22 and 23 in snug relation asshown in Fig. 3.

A dial 25 is carried by one face of the lock or casing 1 and is providedwith a plurality of graduations 26 upon the outer face thereof. Thesegraduations are arranged in concentric circles as clearly shown in Fig.1 of the drawings.

An indicating hand 27 is carried by the dial 25 and is provided with anelongated slot 32, the sleeve 7 extending through the slot andconstituting a guide for the indicating hand as the hand is shiftedtransversely across the face of the dial 25. A washer 28 is threadedupon the outer end of the sleeve 7 and constitutes a means for retainingthe hand 27 upon the face of the dial 25 and prevents the hand frombecoming accidentally displaced therefrom. A suitable knob 27 is securedto the lower end of the indicating hand 27 to facilitate the swingingand sliding of the indicating hand over the face of the dial 25.

The dial 25 is provided with a circular opening 25 arranged centrallytherein to permit a bifurcated arm 29 to be secured to the indicatorhand 27 and at the same time allow the bifurcated arm 29 as well as theindicator hand 27 to freely slide to a properly adjusted position. Thebifurcated arm 29 carries a finger 30 at its upper or outer end upontheinner face thereof and the bifurcated portions of the arm 29 are securedto the indicator hand 27 by means of suitable transversely extendingpins or other suitable fastening means indicated in general by thenumeral 33. It should be understood that any suitable or desired meansmay be employed for connecting the indicator-hand to the bifurcated arm29 without departing from the spirit of the invention. These connectingmeans, however, must be located near the inner or lower ends of therespective indicator hand 27 and arm 29. These fastening means 33 mayeasily pass through the central aperture 25 as indicated in Fig. 3, thefastening means being secured near the side edges of the aperture orslot 32 in the hand 27 and to rsaaeai the bifurcated portion of thebifurcated arm 29.

As above stated, a finger 30 is formed upon orsecured to the upperportion of the bifurcated arm 29 upon the inner face thereof and is sopositioned as to engage the lugs '22 and 23 carried by the circularrotating tumbler plates 22 and 23. The dial 25 is positively heldagainst rotating movement by means of a band 25 arranged upon the innerface thereof and snugly secured to the side portions or periphery of thecasingl. Arms 13 are formed upon the circular plate 13 and engage theperiphery of the casing at a point adjacent the flange 25 and are firmlyheld in engagement with the casing by means of suitable rivets or thelike. A spring finger 31 is secured to the stationary plate 13 by meansof a bracket 31 and this spring finger 31 is adapted to prevent rotarymovement of the circular tumbler plate 22 under ordinary conditions,except when the lock is operated in a proper manner. The outer end ofthe finger 31 engages the periphery of the plate 22 as clearly shown inFig. 2 of the drawings.

In reviewing the operation of the device, it will be seen that when theindicator hand 27 is shifted across the face of the dial 25 to cause theindicating point thereof to register with one of the concentric circles,at a predetermined point, the bifurcated member 29 will also movetherewith and the indicating hand 27 is then rotated to a desired-pointfor causing the finger 30 to engage one of the lugs formed upon one ofthe tumbler plates 22 and 23 and in this way one of the tumbler platesis brought into proper position to cause the slot or opening 14: toregister with the slot 14. The indicator hand 27 is again shifted to aproper position for causing the finger 30 to engage the lug of the othertumbler plate, whereupon the hand is then rotated or swung for causingthis second tumbler plate to be moved to a proper position whereby theslot oroopening 14 will register with the slot or opening 14 formed inthe first mentioned tumbler plate and :the slot or opening 14: formed inthe plate 13.

When the slots 14' and 14 have been brought into proper registration,the push button 10 may be moved longitudinally of the sleeve 7, therebycausing the pin 11 to swing the upper end of the yoke 16 inwardly, thismovement causing the pin 17 to be moved into the'registering apertures14 and 14'. The movement of the push button 10 will in this way causethe seat 21 of the keeper-19 to be moved out of engagement with the arm18, and as soon as this arm 18 has been released, the spring 6 willcause the shackle 2 to swing to an open position.

When it is desired to close the permutai tion lock, the shackle 2 ismoved or swung o ienin s 14: out of re istration and also out ofregistration with the openings 1+1 formed in the plate 13, in this waypreventing further movement of the circular yoke 16 due to the fact thatthe pin 17 as carried thereby will, if moved forwardly contact with theplate 22 and be held against further swinging movement. A washer 28' iscarried by the sleeve 7 and engages the bifurcated arm 29 and holds thisarm in close contact with the inner face of the dial 25.

While I have herein disclosed the specific embodiment of the invention,it will be apparent to persons skilled in the art, that the invention iscapable of embodiment in other forms and devices difiering in detail andarrangement from that shown as may fall within the scope of the appendedclaims.

Having thus described the invention, what is claimed is 1. In apermutation look, a casing having a pivotal shackle, an arm carried bythe shackle, a keeper for receiving said arm and locking the shackle ina closed position, a sleeve arranged centrally of the casing, rotatabletumbler plates arranged upon said sleeve, slidably mounted means withinthe sleeve, means adapted to be engaged by said slidably mounted meansand adapted to engage said keeper for releasing said arm as saidslidably mounted means is shifted and said tumbler plates provided withmeans formed therein for permitting sliding movement of the slidingmeans, and rotatable and slidable means carried by the sleeve wherebythe tumbler plates may be independently rotated to aline the meansformed therein for permitting sliding movement of said first mentionedslidable means at times.

2. In a permutation lock, a casing having a pivotal shackle, an armcarried by the shackle, a keeper for receiving said arm and locking theshackle in a closed position, a sleeve arranged centrally of the casing,rotatable tumbler plates carried by the sleeve, slidably mounted meanswithin said sleeve, means adapted to be engaged by said slidably mountedmeans and adapted to engage said keeper for releasing said arm as saidslidably mounted means is shifted for engagement with said keeperwhereby said arm may be released, and said tumbler plates provided withmeans formed therein for permitting sliding movement of the slidablemeans, a rotatable and slidable indicator hand carried by the sleeve andan ranged exteriorly of the casing and means afiixed to said rotatableand slidable indicator means whereby the tumbler plates may beindependently rotated to aline the means formed therein, for permittingsliding movement of said first mentioned slidable means, at times.

3. In a permutation look, a casing having a pivotal shackle, an armcarried by the shackle, a resilient keeper for receiving said arm andlocking the shackle in closed position, a sleeve arranged centrally ofthe easing, rotatable tumbler plates arranged upon said sleeve, a pushbutton slidable within the sleeve, means adapted to be engaged by saidpush button and adapted to engage said keeper for releasing said arm assaid push button is shifted, a tumbler plate provided with means forpermitting sliding movement of the slidable push button, a rotatable andslidable indicator hand carried by the sleeve exteriorly of the casing,and means affixed to said indicator hand whereby the tumbler plates maybe independently rotated to aline the means arranged therein forpermitting sliding movement of said button, at times.

4. In a permutation look, a casing having a pivotal shackle, an armcarried by the shackle, a resilient keeper, a seat formed in said keeperfor receiving the arm and locking the shackle in closed position, asleeve arranged centrally of the casing, rotatable tumbler platescarried by the sleeve, slidably mounted means carried within saidsleeve, a circular yoke arranged about the sleeve in proximity to saidresilient keeper and adapted for engagement with the slidably mountedmeans whereby said arm may be released, means formed in the tumblerplates for permitting sliding movement of the slidably mounted means atselected intervals, and rotatable and slidable means carried by thesleeve whereby the tumbler plates may be independently rotated to alinethe means arranged therein for permitting sliding movement of said firstmentioned slidable means, at times.

5. In a permutation look, a casing having a pivotal shackle, an armcarried by th shackle, a resilient keeper for receiving said arm andlocking the shackle in closed position, a sleeve arranged centrally ofthe casing, a slidable push button carried by the sleeve, means arrangedupon the push button for indirectly engaging said keeper for releasingthe arm, rotatable tumbler plates arranged upon said sleeve, meansarranged in said tumbler plates to permit sliding movement of theslidable push button at selected intervals, a rotatable and slidableindicator hand carried by the sleeve and arranged ex teriorly of thecasing, and means afiiXed to said indicator hand whereby the tumblerplates may be independently rotated to aline the means arranged therein,for permitting sliding movement of said slidable push button at selectedintervals.

6. In a permutation padlock including a casing, a shackle pivoted in thecasing, a stationary tumbler plate having an opening, a keeper forengaging the shackle and holding it in the locked position, a yokeadapted to move the keeper and disengage the shackle, means for movingthe yoke, a rotatable tumbler having an opening adapted to aline withthe opening in the stationary tumbler, and a stop pin on the yokeprojectable through the alined openings to permit the movement of theyoke.

7. In a permutation padlock including a casing having a shackle pivotedthereon, a keeper and a yoke cooperating to lock the shackle, a dialarranged on the casing, a plurality of tumblers cooperating with theyoke and provided with means adapted to be moved to a'predeterminedposition for permitting the yoke to be moved to operate the keeper, anindicator hand movable over the dial, and means operated by theindicator hand adapted to engage the tumblers for moving the tumblers topredetermined positions.

8. In a permutation padlock including a casing havinga stationarytumbler plate with an opening, a dial on the casing having radial andcircumferential graduations, tumblers having openings adapted to alinewith the opening of the stationary tumbler plate, means engageable withindividual ones of the last named tumblers whereby the openings aremoved into registration with the stationary tumbler plate opening, andan indicator hand slidable with respect to the radial graduations andrevoluble with respect to the circumferential graduations for securingthe adjustments of the second named tumblers. r

In testimony whereofI afiix my signature in presence of two witnesses.

JOHN M. WALTER. Witnesses:

E. H. MANGER, W. Y. WALIT.

